abstract spiral, swirl, twirl . helix, volute, vortex effect

arc arch billow circle circular circulate coil concentric contortion corkscrew curl curlicue curly curve curvy cycle cyclic cyclical frizz frizzle gyration gyre helical helix hypnosis icon loop propeller radial revolve ripple roll rotate rotation shape spin spiral swirl swirling turbulence twine twirl twist vector vertigo volute vortex wave whirlpool whorl wriggly